fix(types): Object.freeze type pollution from @sentry-internal/replay

CHANGELOG.md

@@ -8,6 +8,10 @@
 
 ## Unreleased
 
+### Fixes
+
+- Fix `Object.freeze` type pollution from `@sentry-internal/replay` ([#5408](https://github.com/getsentry/sentry-react-native/issues/5408))
+
 ### Dependencies
 
 - Bump Android SDK from v8.27.0 to v8.27.1 ([#5404](https://github.com/getsentry/sentry-react-native/pull/5404))

packages/core/test/typings/object-freeze.test.ts

@@ -0,0 +1,104 @@
+/**
+ * Type test for Object.freeze pollution fix
+ *
+ * This test ensures that Object.freeze() resolves to the correct built-in type
+ * and not to a polluted type from @sentry-internal/replay.
+ *
+ * See: https://github.com/getsentry/sentry-react-native/issues/5407
+ */
+
+describe('Object.freeze type inference', () => {
+  it('should correctly freeze plain objects', () => {
+    const frozenObject = Object.freeze({
+      key: 'value',
+      num: 42,
+    });
+
+    // Runtime test: should be frozen
+    expect(Object.isFrozen(frozenObject)).toBe(true);
+
+    // Type test: TypeScript should infer Readonly<{ key: string; num: number; }>
+    expect(frozenObject.key).toBe('value');
+    expect(frozenObject.num).toBe(42);
+  });
+
+  it('should correctly freeze objects with as const', () => {
+    const EVENTS = Object.freeze({
+      CLICK: 'click',
+      SUBMIT: 'submit',
+    } as const);
+
+    // Runtime test: should be frozen
+    expect(Object.isFrozen(EVENTS)).toBe(true);
+
+    // Type test: TypeScript should infer literal types
+    expect(EVENTS.CLICK).toBe('click');
+    expect(EVENTS.SUBMIT).toBe('submit');
+
+    // TypeScript should infer: Readonly<{ CLICK: "click"; SUBMIT: "submit"; }>
+    const eventType: 'click' | 'submit' = EVENTS.CLICK;
+    expect(eventType).toBe('click');
+  });
+
+  it('should correctly freeze functions', () => {
+    const frozenFn = Object.freeze((x: number) => x * 2);
+
+    // Runtime test: should be frozen
+    expect(Object.isFrozen(frozenFn)).toBe(true);
+
+    // Type test: function should still be callable
+    const result: number = frozenFn(5);
+    expect(result).toBe(10);
+  });
+
+  it('should correctly freeze nested objects', () => {
+    const ACTIONS = Object.freeze({
+      USER: Object.freeze({
+        LOGIN: 'user:login',
+        LOGOUT: 'user:logout',
+      } as const),
+      ADMIN: Object.freeze({
+        DELETE: 'admin:delete',
+      } as const),
+    } as const);
+
+    // Runtime test: should be frozen
+    expect(Object.isFrozen(ACTIONS)).toBe(true);
+    expect(Object.isFrozen(ACTIONS.USER)).toBe(true);
+    expect(Object.isFrozen(ACTIONS.ADMIN)).toBe(true);
+
+    // Type test: should preserve nested literal types
+    expect(ACTIONS.USER.LOGIN).toBe('user:login');
+    expect(ACTIONS.ADMIN.DELETE).toBe('admin:delete');
+
+    // TypeScript should infer the correct literal type
+    const action: 'user:login' = ACTIONS.USER.LOGIN;
+    expect(action).toBe('user:login');
+  });
+
+  it('should maintain type safety and prevent modifications at compile time', () => {
+    const frozen = Object.freeze({ value: 42 });
+
+    // Runtime: attempting to modify should silently fail (in non-strict mode)
+    // or throw (in strict mode)
+    expect(() => {
+      // @ts-expect-error - TypeScript should prevent this at compile time
+      (frozen as any).value = 100;
+    }).not.toThrow(); // In non-strict mode, this silently fails
+
+    // Value should remain unchanged
+    expect(frozen.value).toBe(42);
+  });
+
+  it('should work with array freeze', () => {
+    const frozenArray = Object.freeze([1, 2, 3]);
+
+    // Runtime test
+    expect(Object.isFrozen(frozenArray)).toBe(true);
+    expect(frozenArray).toEqual([1, 2, 3]);
+
+    // Array methods that don't mutate should still work
+    expect(frozenArray.map(x => x * 2)).toEqual([2, 4, 6]);
+    expect(frozenArray.filter(x => x > 1)).toEqual([2, 3]);
+  });
+});

packages/core/tsconfig.build.json

@@ -7,7 +7,8 @@
     "./src/js/playground/*.tsx",
     "./src/js/**/*.web.ts",
     "./src/js/**/*.web.tsx",
-    "./typings/react-native.d.ts"
+    "./typings/react-native.d.ts",
+    "./typings/global.d.ts"
   ],
   "exclude": ["node_modules"],
   "compilerOptions": {

packages/core/typings/global.d.ts

@@ -0,0 +1,30 @@
+/**
+ * Global type augmentations for the Sentry React Native SDK
+ *
+ * This file contains global type fixes and augmentations to resolve conflicts
+ * with transitive dependencies.
+ */
+
+/**
+ * Fix for Object.freeze type pollution from @sentry-internal/replay
+ *
+ * Issue: TypeScript incorrectly resolves Object.freeze() to a freeze method
+ * from @sentry-internal/replay's CanvasManagerInterface instead of the built-in.
+ *
+ * See: https://github.com/getsentry/sentry-react-native/issues/5407
+ */
+declare global {
+  interface ObjectConstructor {
+    freeze<T>(o: T): Readonly<T>;
+
+    // eslint-disable-next-line @typescript-eslint/ban-types -- Matching TypeScript's official Object.freeze signature from lib.es5.d.ts
+    freeze<T extends Function>(f: T): T;
+
+    freeze<T extends {[idx: string]: U | null | undefined | object}, U extends string | bigint | number | boolean | symbol>(o: T): Readonly<T>;
+
+    freeze<T>(o: T): Readonly<T>;
+  }
+}
+
+export {};
+